48 pitchers are tied for allowing the fewest runs this season, with 0 runs. The first three are Jake Bauers, Nick Burdi and Willi Castro.

Interpreted as:

MLB least runs allowed by a player this regular season

	NAME	R	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Jake Bauers J. Bauers	0	2025	MIL	4	0	0		0	0.00	0	0	0	0	4.0	4	0	0	1	2	4	0	19	0	0.00	2.25	0.00	0.00	0.0	5.3	1.25	.250	0.00	0	5.32	132	9.00	-0.6
2	Nick Burdi N. Burdi	0	2025	BOS	2	0	0		0	0.00	1	0	0	0	2.1	4	0	0	1	0	1	0	10	0	3.86	3.86	1.00	0.00	10.0	10.0	2.14	.500	0.00	0	3.50	85	15.43	0.2
3	Willi Castro W. Castro	0	2025	MIN	1	0	0		0	0.00	0	0	0	0	1.0	1	0	0	0	0	1	0	4	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	0	3.07	75	9.00	0.1
4	Danny Coulombe D. Coulombe	0	2025	MIN	19	1	0	1.000	0	0.00	19	0	0	2	16.2	8	0	0	2	0	6	0	60	0	10.26	1.08	9.50	0.00	31.7	3.3	0.60	.205	0.00	0	1.15	28	4.32	5.4
5	Jhonathan Díaz J. Díaz	0	2025	SEA	1	0	0		0	0.00	1	0	0	0	1.1	1	0	0	0	0	1	0	5	0	6.75	0.00		0.00	20.0	0.0	0.75	.250	0.00	0	1.57	40	6.75	0.4
6	Chris Flexen C. Flexen	0	2025	CHC	5	1	0	1.000	0	0.00	6	0	0	1	9.0	6	0	0	3	0	4	0	35	1	6.00	3.00	2.00	0.00	17.1	8.6	1.00	.231	0.00	0	2.73	70	6.00	1.2
7	Hunter Harvey H. Harvey	0	2025	KCR	6	0	0		0	0.00	7	0	0	0	5.1	1	0	0	0	0	1	0	17	0	11.81	0.00		0.00	41.2	0.0	0.19	.100	0.00	0	0.44	11	1.69	2.1
8	Enrique Hernández E. Hernández	0	2025	LAD	1	0	0		0	0.00	0	0	0	0	1.0	2	0	0	0	0	1	0	5	0	0.00	0.00		0.00	0.0	0.0	2.00	.400	0.00	0	3.07	75	18.00	0.1
9	Adrian Houser A. Houser	0	2025	CWS	1	1	0	1.000	1	0.00	2	0	0	0	6.0	2	0	0	3	0	0	0	21	0	3.00	4.50	0.67	0.00	9.5	14.3	0.83	.125	0.00	0	3.90	93	3.00	0.2
10	Andrew Kittredge A. Kittredge	0	2025	BAL	1	0	0		0	0.00	1	0	0	0	1.0	0	0	0	0	0	0	0	3	0	9.00	0.00		0.00	33.3	0.0	0.00	.000	0.00	0	1.07	27	0.00	0.3
11	Jonathan Loáisiga J. Loáisiga	0	2025	NYY	3	0	0		0	0.00	2	0	0	0	2.2	2	0	0	2	1	0	0	14	0	6.75	6.75	1.00	0.00	14.3	14.3	1.50	.222	0.00	0	4.94	118	6.75	-0.2
12	Scott McGough S. McGough	0	2025	AZ	3	0	0		0	0.00	3	0	0	0	4.0	1	0	0	1	0	2	0	14	0	6.75	2.25	3.00	0.00	21.4	7.1	0.50	.100	0.00	0	2.32	60	2.25	0.7
13	Tomás Nido T. Nido	0	2025	DET	1	0	0		0	0.00	0	0	0	0	1.2	0	0	0	0	1	1	0	6	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0	4.87	121	0.00	-0.2
14	Adam Ottavino A. Ottavino	0	2025	NYY	3	0	0		0	0.00	3	0	0	0	1.2	0	0	0	4	0	0	0	9	0	16.20	21.60	0.75	0.00	33.3	44.4	2.40	.000	0.00	0	6.67	159	0.00	-0.4
15	Evan Phillips E. Phillips	0	2025	LAD	7	0	0		0	0.00	6	0	0	1	5.2	4	0	0	2	0	1	0	22	0	9.53	3.18	3.00	0.00	27.3	9.1	1.06	.286	0.00	0	2.01	49	6.35	1.3
16	Drew Pomeranz D. Pomeranz	0	2025	CHC	11	1	0	1.000	0	0.00	11	0	0	1	10.1	4	0	0	2	2	3	0	38	0	9.58	1.74	5.50	0.00	28.9	5.3	0.58	.174	0.00	0	2.10	54	3.48	2.1
17	Hunter Strickland H. Strickland	0	2025	LAA	1	0	0		0	0.00	0	0	0	0	1.0	0	0	0	0	0	0	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0	3.07	73	0.00	0.1
18	Zach Thompson Z. Thompson	0	2025	ATL	2	0	0		0	0.00	3	0	0	0	3.2	0	0	0	1	0	0	0	12	1	7.36	2.45	3.00	0.00	25.0	8.3	0.27	.000	0.00	0	2.25	57	0.00	0.7
19	Rob Zastryzny R. Zastryzny	0	2025	MIL	3	0	0		1	0.00	6	0	0	0	3.2	4	0	0	0	0	0	0	15	0	14.73	0.00		0.00	40.0	0.0	1.09	.444	0.00	0	-0.21	-5	9.82	1.7
20	Taylor Clarke T. Clarke	0	2025	KCR	6	1	0	1.000	0	0.00	4	0	0	0	7.1	3	0	0	0	0	4	0	25	1	4.91	0.00		0.00	16.0	0.0	0.41	.143	0.00	0	1.98	49	3.68	1.7
21	Brandon Waddell B. Waddell	0	2025	NYM	1	0	0		0	0.00	4	0	0	0	4.1	3	0	0	0	0	0	0	16	0	8.31	0.00		0.00	25.0	0.0	0.69	.250	0.00	0	1.22	31	6.23	1.3
22	Easton McGee E. McGee	0	2025	MIL	1	0	0		0	0.00	1	0	0	0	1.0	0	0	0	0	0	0	0	3	0	9.00	0.00		0.00	33.3	0.0	0.00	.000	0.00	0	1.07	26	0.00	0.3
23	Nicky Lopez N. Lopez	0	2025	TOT	1	0	0		0	0.00	0	0	0	0	0.1	0	0	0	1	0	1	0	2	0	0.00	27.00	0.00	0.00	0.0	50.0	3.00	.000	0.00	0	12.07	288	0.00	-0.3
24	Davis Daniel D. Daniel	0	2025	ATL	1	0	0		0	0.00	1	0	0	0	1.0	0	0	0	0	1	1	0	4	0	9.00	0.00		0.00	25.0	0.0	0.00	.000	0.00	0	4.07	104	0.00	0
25	Jacob Amaya J. Amaya	0	2025	CWS	1	0	0		0	0.00	0	0	0	0	1.0	0	0	0	0	0	1	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0	3.07	73	0.00	0.1